General tax education, not tax advice. The IRS expects a contemporaneous mileage log with five fields. 2026 has two business rates. Confirm Publication 463, IR-2025-128 (72.5¢ January 1–June 30, 2026) and IR-2026-29 (76¢ from July 1) for the year you file. Have a tax professional review mixed personal / commuting / business nights and any reconstruction.
On an iPhone, track mileage for taxes by recording each drive the day you take it, then classifying business versus personal before you forget why you drove. For 1099, rideshare, and delivery work, a platform “online miles” total from Uber, Lyft, DoorDash, or a similar app is not the IRS log. The log needs the date, the destination, a business purpose, the miles for that trip, and the year’s total miles on the car. In 2026, business miles are 72.5¢ from January 1 through June 30 and 76¢ from July 1, by the date of the drive. This is general education, not tax advice, and not a promise of any deduction.
Do this on the iPhone
- Photograph the odometer and keep one log per car. On January 1, or the day the car enters business use, photograph the reading. Standard mileage versus actual expenses is a first-year choice per vehicle. Two cars means two logs.
- Record each drive on the iPhone the day you take it. Let one mileage app auto-detect the drive, or write the five fields yourself that day. Do not wait for the platform summary. Those summaries miss trips the app was not open for, and they do not replace a purpose note.
- Classify business, commuting, and personal the same day. Home to a regular workplace, or the zone you sit in most nights, is usually commuting. Paid pickups, deliveries, and unpaid stretches while you are already working are usually business. A personal errand is not.
- Apply 72.5¢ or 76¢ by the date of the drive. A June 30 trip stays at 72.5¢. A July 1 trip is 76¢. Do not multiply one yearly total by one rate. Those two figures are IR-2025-128 and IR-2026-29.
- Review weekly and export both halves. Catch unclassified trips while you still remember the purpose. At year-end, export a PDF or CSV with both rate halves, total vehicle miles, and the business / commuting / other split. Export before you delete the app.
The rest of this page is the detail behind those five steps: what Publication 463 asks for, how the four tracking methods compare, and where the specialized posts live. At 2026’s rates, 10,000 business miles in the first half of the year are $7,250; the same 10,000 miles after July 1 are $7,600. That illustration is arithmetic, not a promise that you will deduct either amount.
What the IRS Requires in a Mileage Log
Before choosing a method, you need the five elements Publication 463 still wants for each trip. The field-by-field walkthrough is how to keep an IRS-ready mileage log. The audit-survival version — contemporaneous notes, listed property, how long to keep the file — is IRS mileage log requirements.
- Date of the trip (this is also the 2026 rate stamp)
- Destination (name and address or route)
- Business purpose (client meeting, restaurant-to-customer delivery, supply run — a sentence, not just “work”)
- Miles driven for the trip
- Total annual mileage for the vehicle (business + commuting + personal, to compute business-use percentage)
The contemporaneous rule: Records must be created at or near the time of each trip. A log reconstructed at year-end from memory is not considered reliable and can be rejected during an audit. Cars are listed property. If you already stopped tracking, do not invent rows — see how to reconstruct a mileage log after the fact.
Year-start and year-end odometer photos back the total-miles number on Schedule C Part IV. That habit is how to keep an odometer photo log.
2026 has two IRS rates — never blend them
This year is the trap that was not in the January version of this page. The IRS raised the business standard mileage rate mid-year. The full how-to is how to apply the 2026 IRS mileage rate change, which also covers who may use the standard rate.
| When you drove | Business rate | What the log must show |
|---|---|---|
| January 1 – June 30, 2026 | 72.5¢ per mile | First-half business miles, dated |
| July 1 – December 31, 2026 | 76¢ per mile | Second-half business miles, dated |
The rate follows the date of the drive, not the payday, not the week the customer paid, and not the day you export the CSV. A June 30 11 p.m. trip is still 72.5¢. A July 1 6 a.m. trip is 76¢. One annual total × one rate is the error the mid-year change was designed to catch.
Illustration only, not a promise: 8,000 business miles in the first half and 9,000 in the second half is $5,800 + $6,840 = $12,640. The same 17,000 miles at 72.5¢ all year would understate the deduction by $315. A blended “about 74 cents” is not an IRS method.
Standard mileage vs. actual expenses is a first-year election that follows the car. Run both on paper once. The comparison is standard mileage vs. actual expenses. If you drive two cars or buy one mid-year, keep one log per odometer — two cars, two logs.
Four Methods to Track Your Mileage
Any of the four can be IRS-compliant if you actually fill the five fields the same day and stamp 2026 miles by date. The method that fails is the one you abandon in March.
Method 1: Paper Logbook Grade: C
The old-school approach. Keep a notebook in the car and write date, destination, purpose, and odometer readings before and after each trip.
- Pros: Zero cost, no technology, works when the phone is dead
- Cons: Easy to forget, painful to split at June 30, can be lost, no backup, no GPS check
Paper remains compliant. It has the highest abandonment rate. If you use it in 2026, draw a hard line after June 30 and total each half separately. Do not add the year and multiply by one rate.
Method 2: Spreadsheet Grade: B-
A Google Sheet or Excel file with columns for date, start/end, purpose, miles, and a rate column that switches from 0.725 to 0.76 on July 1.
- Pros: Free, easy to total each half, cloud backup, shareable with an accountant
- Cons: Daily discipline, still manual, easy to forget trips, no GPS verification
A spreadsheet is a step up from paper if you actually open it the same night. It is a reconstruction engine if you fill it from memory in December. Put the rate in a formula on the date, not in a year-end cell.
Method 3: OBD-II / Bluetooth Dongle Grade: B+
Plug a small device into the car’s diagnostic port. It talks to a phone app over Bluetooth and logs when the engine starts and stops.
- Pros: Automatic detection, fairly accurate mileage, less forgetting
- Cons: Hardware cost, must stay plugged in, not all vehicles, battery drain on some cars, you still classify purpose, you still have to apply 72.5¢ / 76¢ by date
A dongle solves detection. It does not solve purpose, commuting vs business, or the mid-year rate split. If you switch from a dongle app to another log mid-year, export first — how to switch mileage apps without losing the IRS log.
Method 4: GPS Mileage Tracking App Grade: A
A smartphone app that uses GPS and motion sensors to detect when you start driving, records the route, and lets you classify each trip as business, commuting, or personal while the purpose is still in your head.
- Pros: Automatic detection, GPS-verified distance, same-day swipe classification, cloud backup on paid plans, IRS-ready export, works in any vehicle
- Cons: Subscription for unlimited trips and CPA export; uses some battery; you still have to swipe purpose — auto-detect is not auto-classify
This is the approach that fails least often, because the usual reason the deduction is weak is that the log was never started. Auto-detect records the route. It does not decide purpose, commuting versus business, or which 2026 rate applies. You still classify the same day, and you still need the export to show 72.5¢ or 76¢ by trip date. Hands-free start and stop from the car screen or a watch is optional; the log still lives on the iPhone. See how to track mileage from CarPlay and Apple Watch. The night before a first shift, use iPhone setup for your first week of gig driving.
Comparison: Which Method Is Right for You?
| Feature | Paper | Spreadsheet | OBD-II | GPS App |
|---|---|---|---|---|
| Auto-detection | ✗ | ✗ | ✓ | ✓ |
| GPS-verified distance | ✗ | ✗ | ✗ | ✓ |
| 72.5¢ / 76¢ by trip date (if you set it up) | Manual totals | Formula on date | Depends on the app | Only if the app stamps each trip’s date |
| IRS-ready export | ✗ | ✓ | ✓ | ✓ |
| Zero daily effort to capture trips | ✗ | ✗ | ✓ | ✓ |
| Works in any vehicle | ✓ | ✓ | ✗ | ✓ |
| Cloud backup | ✗ | ✓ | ✓ | ✓ |
| Typical cost | Free | Free | $30–100 hardware | Free 40 business trips total; Pro optional |
How to Set Up Your Tracking System
Regardless of which method you choose, these steps keep the system alive through December — and through the June 30 rate change.
Step 1: Record Your Starting Odometer
On January 1 (or the first day the vehicle enters business use), photograph the odometer and write the reading down. You need year-start and year-end readings for total annual miles and business-use percentage. The photo habit is in odometer photo mileage log. If a second car appears in July, that VIN gets its own bookend photos — two cars, mid-year switch.
Step 2: Define Your Business Trips (and commuting)
Before you start tracking, get clear on what counts. The 2026 map is what counts as a business mile. The commuting rule is business miles vs. commuting miles.
- Home office → client site usually counts. Home → a regular office or the restaurant strip you sit in four nights a week usually does not.
- Bank, office supply store, or post office for the business usually counts. A grocery stop on the way home does not.
- Unpaid hops between paid gigs while you are already working are often business (deadhead). Sitting in a lot with the app open is not a mile.
Gig drivers: platform “online miles” are a source, not the IRS log. One physical mile is one deduction even if two apps are open.
Step 3: Make Classification a Habit
The best time to classify a trip is right after it happens. If you use an app, swipe business, commuting, or personal while the purpose is fresh. If you wait until month-end, you will misclassify trips and either leave money on the table or over-claim. Same-day purpose is what makes a GPS capture contemporaneous. Auto-detect without classification is just a map.
Step 4: Review Weekly — and check the rate half
Spend five minutes each Sunday. Did you classify everything? Any trip that needs a better purpose sentence? After July 1, confirm new trips are landing in the 76¢ half, not still priced at 72.5¢. Weekly reviews catch gaps before they become an April reconstruction.
Step 5: Export and Archive (both rate halves)
At year-end, generate a mileage report that a tax pro can use without guessing. They want the five IRS fields, total vehicle miles, the business / commuting / other split, and 72.5¢ miles through June 30 plus 76¢ miles from July 1 — not one blended total. The handoff checklist is how to export your mileage log for your CPA.
If you use an app, export PDF and CSV before you cancel or switch. If you use a spreadsheet, freeze a final copy. Keep the file with the return. Retention is generally three years from filing (longer in some cases) — see how long to keep mileage logs.
What still stacks: If you also track business parking, tolls, and a phone slice, keep those receipts in the same system as the mileage log. They sit on top of standard mileage. Gas, insurance, and repairs do not. The stack list is write-offs that stack with the mileage deduction.
Common Mistakes That Cost Money
- Not starting until mid-year. Every untracked mile from January until you begin is a weaker claim. Begin on January 1, or the day the car enters business use.
- Counting commuting miles. Home to a regular workplace is personal for deduction purposes. This is the most common over-claim.
- Blending 2026 into one rate. 72.5¢ through June 30, 76¢ from July 1, by trip date. A year-end average is not an IRS method.
- Rounding up or estimating. The IRS expects actual distances. A log that shows “50 miles” for every trip is a red flag.
- Tracking miles but not the purpose. Every trip needs a documented business reason. “Meeting” is not enough — note who and why.
- Mixing methods mid-year without an export. Paper until June, app from July is fine if there is no gap. Export the first system before you abandon it.
- Adding two apps’ mile totals. One physical mile is one deduction. Reconcile platforms against one GPS log.
What Happens if You Don't Track?
If you claim a mileage deduction but cannot produce a contemporaneous log during an audit, the IRS can disallow the entire deduction. You then owe tax on that income plus interest, and possibly an accuracy penalty. Illustration only: 15,000 business miles claimed with no dated log is not “about $11,000 of deduction the examiner will accept from a story.”
The bar is not impossibly high. You need a consistent, contemporaneous log with the five required data points and, in 2026, a date stamp that can carry 72.5¢ or 76¢. Any of the four methods above will satisfy that — as long as you actually use it. If you already have a hole in the year, start today and rebuild only what you can support. Do not invent the missing months.
I use Tax Miles on iPhone for this (App Store id 6758579463; the listing may still say TaxMiles: IRS Mileage Tracker). It auto-detects the trip, I classify business versus personal the same day, and I export the log. Free covers your first 40 business trips. It is not MileIQ, not Everlance, and not Mileage Tracker for Taxes (id 6758426140). Not tax advice.
That same-day record is what a mileage tracker for taxes is for.
Frequently Asked Questions
Can I deduct mileage for driving to a coworking space?
It depends. If the coworking space is your regular, primary place of business, driving there from home is commuting (not deductible). If your home office is your primary workplace and you occasionally drive to a coworking space, that trip may qualify as business travel. The commuting map is business miles vs. commuting miles.
What if I forgot to track mileage for several months?
You cannot retroactively create a mileage log from memory and call it contemporaneous. Cars are listed property. Rebuild from platform history, calendars, Maps Timeline, and odometer proof, then apply 72.5¢ / 76¢ by trip date. The honest rebuild is how to reconstruct a mileage log after the fact. Going forward, set up automatic tracking so this does not happen again.
Do I need to track personal miles too?
Yes. The IRS needs total annual mileage (business + commuting + personal) to verify business-use percentage. Record odometer readings at the start and end of the year. Photos help — odometer photo log.
Is there a minimum number of miles to claim a deduction?
No. Even a single business mile is deductible if the log is contemporaneous. The deduction only helps if you file Schedule C (self-employed) or otherwise qualify to claim vehicle expenses. Apply 72.5¢ or 76¢ by that mile’s date in 2026.
What is the 2026 IRS mileage rate?
72.5¢ per business mile January 1 through June 30, and 76¢ from July 1 through December 31 (IR-2025-128 and IR-2026-29). Never blend the year into one rate. Full how-to: the 2026 IRS mileage rate change.
Related reading: IRS-ready mileage log, IRS mileage log requirements, what counts as a business mile, business vs commuting, 2026 IRS mileage rate, standard vs actual, export for your CPA, CarPlay and Apple Watch, switch mileage apps, two cars, reconstruct after the fact, odometer photo log, multi-app without double-counting, Uber Eats taxes, Tax Miles vs MileIQ and Everlance, and the homepage.
Updated October 23, 2026. This article is general tax education for U.S. federal Schedule C filers, not legal, tax, or accounting advice and not a guarantee of any deduction. Publication 463, commuting rules, Schedule C instructions, and IRS mileage rates can change; read the current IRS pages (standard mileage rates, IR-2025-128 and IR-2026-29, and Publication 463) or work with a licensed professional. Tax Miles (App Store id 6758579463) is not affiliated with the IRS, and is not MileIQ, Everlance, or Mileage Tracker for Taxes (id 6758426140).